<template>
  <div>
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图-->
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false">
      </el-alert>
<!--步骤条-->
      <el-steps :active="activeIndex - 0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef"
               label-width="100px" label-position="top">
        <el-tabs v-model="activeIndex" :tab-position="tabPosition"
                 :before-leave="tabBeforeLeave" @tab-click="tabClick">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight"  type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_num">
              <el-input v-model="addForm.goods_num"  type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                style="width: 40%"
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cascaderProps"
                 clearable
                @change="handleChange()">
              </el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
          <!--渲染动态参数-->
            <el-form-item :key="item.attr_id" :label="item.attr_name" v-for="(item) in manyTableData">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox border :key="i" :label="item" v-for="(item,i) in item.attr_vals"></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <!--渲染动态参数-->
            <el-form-item :key="item.attr_id" :label="item.attr_name" v-for="(item) in onlyTableData">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox border :key="i" :label="item" v-for="(item,i) in item.attr_vals"></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!--
            action 表示后台要上传的api地址
            on-preview 预览图片的事件函数
            on-remove 删除图片的事件
            before-remove 删除图片的事件
            multiple 多文件图片上传
            file-list 文件列表
            list-type 图片的显示效果
            -->
            <el-upload
              :action="upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :before-remove="beforeRemove"
              multiple
              :limit="3"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
              >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!--富文本编辑组件-->
            <quill-editor
              v-model="addForm.goods_introduce"
            />
            <!--添加商品按钮-->
            <el-button type="primary" class="btnAdd"
              @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!--添加图片预览对话框-->
    <el-dialog title="图片预览" :visible.sync="previewVisible"
               width="50%">
      <img :src="previewPath" alt="" class="previewImg">
    </el-dialog>

  </div>
</template>

<script>
  let catejson=require('./json/cate.json')
  let manyjson=require('./json/ManyParams.json')
  let onlyjson=require('./json/OnlyParams.json')

  import _ from "lodash"
  export default {
    name: "Add",
    data(){
      return{
        previewVisible:false,
        activeIndex:'0',
        tabPosition:'left',
        addForm:{
          goods_name:'',
          goods_price:0,
          goods_weight:0,
          goods_num:0,
          goods_cat:[],
          //图片的数组
          pics:[],
          //详情描述
          goods_introduce:'',
          attrs:[]
        },
        //动态参数列表数据
        manyTableData:[],
        onlyTableData:[],
        //图片上传的头部token验证
        headerObj:{
          Authorization:window.sessionStorage.getItem("token")
        },
        //上传图片的上传地址
        upload:'http://localhost:8888/posts/upload',
        // 图片预览路径，全路径
        previewPath:'',
        addFormRules:{
          goods_name:[
            {required: true,message:'请输入商品名称',trigger:'blur'},
          ],
          goods_price:[
            {required: true,message:'请输入商品价格',trigger:'blur'},
          ],
          goods_weight:[
            {required: true,message:'请输入商品重量',trigger:'blur'},
          ],
          goods_num:[
            {required: true,message:'请输入商品数量',trigger:'blur'},
          ],
          goods_cat:[
            {required: true,message:'请输入商品类别',trigger:'blur'},
          ]
        },
        //级联对象的配置属性
        cascaderProps:{
          expandTrigger:"hover",
          value:'id',
          label:'cat_name',
          children:'children'
        }
      }
    },
    created(){
      this.getCateList()
    },
    methods:{
      //获取所有商品分类数据
      async getCateList(){
        this.cateList=catejson
        return
        const {data:res}=await this.$http.get('categories')
        if(res.meta.status!==200){
          return this.$message.error('获取失败')
        }
        this.cateList=res.data;
      },
      //级联选择器选中会触发
      handleChange(){
        console.log(this.addForm.goods_cat)
        if(this.addForm.goods_cat.length!==3){
          this.addForm.goods_cat=[]
          return
        }
      },
      tabBeforeLeave(activeName,oldactiveName){
        if(oldactiveName==='0'&&this.addForm.goods_cat.length!==3){
          this.$message.error('请选择商品分类')
          return false
        }
        return true
      },
      async tabClick(){
        console.log(this.activeIndex)
      //  访问动态参数面板
        if(this.activeIndex==='1'){
          console.log(typeof(manyjson))
          manyjson.forEach(item=>{
            item.attr_vals=item.attr_vals.length===0?[]:item.attr_vals.split(' ')
          })
          this.manyTableData=manyjson
          console.log(this.manyTableData)
          return
          console.log('动态参数面板')
          const {data:res}=await this.$http.get('categories/${this.cateId}/attributes',{
            params:{
              sel:many
            }
          })
          if (res.meta.status!==200){
            return this.$message.error('获取动态参数失败')
          }
          this.manyTableData=res.data
        }
        else if(this.activeIndex==='2'){
          console.log("onlyjson")
          onlyjson.forEach(item=>{
            item.attr_vals=item.attr_vals.length===0?[]:item.attr_vals.split(' ')
          })
          console.log(onlyjson)
          this.onlyTableData=onlyjson
          return
          console.log('动态参数面板')
          const {data:res}=await this.$http.get('categories/${this.cateId}/attributes',{
            params:{
              sel:only
            }
          })
          if (res.meta.status!==200){
            return this.$message.error('获取商品属性失败')
          }
          this.onlyTableData=res.data
        }
      },
      //处理预览图片的操作
      handlePreview(){

      },
      //处理移除图片的操作
      handleRemove(file){
        console.log(file)
      //  获取将要删除的临时图片路径
        const filePath=file.response.data.tem_path
      //  从pics数组中，找到这个临时图片的索引值
        const i=this.addForm.pics.findIndex(item=>{
          item.pic===filePth
        })
      //  使用数组的splice方法，将图片从数组中删除
        this.addForm.pics.splice(i,1)
        console.log(this.addForm)
      },
      beforeRemove(){

      },
      //监听图片上传成功的事件
      handleSuccess(response){
        console.log(response)
      //  得到一个图片对象
        const picInfo={pic:response.data.tmp_path}
      //  将图片对象push到pics数组中
        this.addForm.pics.push(picInfo)
        console.log(this.addForm)
      },
      //点击预览图片
      handlePreview(file){
        console.log(file)
        this.previewPath=file.response.data.url
        this.previewVisible=true
      },
    //  添加商品
      async add(){
        console.log(this.addForm)
        this.$refs.addFormRef.validate(async valid=>{
          if(!valid){
            return this.$message.error('验证错误，请核实')
          }
        //  执行添加的业务
        //  深度拷贝 lodash cloneDeep(obj),两个不通的对象
          const form=_.cloneDeep(this.addForm)
          form.goods_cat=form.goods_cat.join(',')
        //  处理动态参数和静态属性
          this.manyTableData.forEach(item=>{
            const newInfo={ attr_id:item.attr_id,
                            attr_value:item.attr_vals.join(',')
                          }
            this.addForm.attrs.push(newInfo)
          })

          this.onlyTableData.forEach(item=>{
            const newInfo={ attr_id:item.attr_id,
              attr_value:item.attr_vals.join(',')
            }
            this.addForm.attrs.push(newInfo)
          })
          form.attrs=this.addForm.attrs
          console.log(form)
        //  发起请求，添加商品
        //  商品的名称必须是唯一的
          const {data:res}=await this.$http.post('goods',form);
          if (this.meta.status!==200){
            return this.$message.error('提交商品信息错误')
          }
          this.$message.success('提交商品信息成功')
          this.$router.push('/goods')
        })
      }
    },
    computed:{
      cateId(){
        if (this.addForm.goods_cat.length===3){
          return this.addForm.goods_cat[2]
        }
        return null;
      }
    }
  }
</script>

<style lang="less" scoped>
  .el-checkbox{
    margin: 0 5px 0 0 !important;
  }
  .previewImg{
    width: 100%;
  }
  .btnAdd{
    margin-top: 15px;
  }
</style>

